https://bugs.kde.org/show_bug.cgi?id=370003
Nicolas Bigaouette <nbigaoue...@gmail.com> changed:
What |Removed |Added
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CC| |nbigaoue...@gmail.com
--- Comment #5 from Nicolas Bigaouette <nbigaoue...@gmail.com> ---
I'm facing the same issue and it's driving me nuts.
I leave my system open and logged in when I finish my day. The next day, with a
probability of close to 100%, plasma becomes almost unusable. It slows down
significantly and consumes what appear to be a core.
While it's relatively easy to reproduce (just wait a couple of hours), I really
don't know the source of the problem.
I'm using (up-to-date) ArchLinux x86_64, KDE Frameworks 5.28.0, Qt 5.7 (xcb),
intel graphics.
I have many windows opened:
-Atom editor
- Chromium
- git gui & gitk
- a couple of konsole terminals (with tmux in them with a dozen tmux windows)
- Thunderbird
- Minimized to tray (unused) I have "KDE Remote Desktop Client" and
"simplescreenrecorder"
If I call strace on plasmashell I get a ton of:
futex(0x8c5e00, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x8c5e00, FUTEX_WAIT_PRIVATE, 3, NULL) = 0
futex(0x8c5e00, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x8c5e00, FUTEX_WAIT_PRIVATE, 3, NULL) = 0
and
futex(0x8c5e00, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x8c5e00, FUTEX_WAIT_PRIVATE, 3, NULL) = -1 EAGAIN (Resource temporarily
unavailable)
futex(0x8c5e00, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x8c5e00, FUTEX_WAIT_PRIVATE, 3, NULL) = -1 EAGAIN (Resource temporarily
unavailable)
futex(0x8c5e00, FUTEX_WAKE_PRIVATE, 1) = 0
I also get many things related to `DRM_IOCTL_I915_GEM_*`
Running perf for 10 seconds (and not interacting with the machine):
$ perf record -e cpu-clock -p `pidof plasmashell` -o perf2.data
$ perf report -i perf2.data
Samples: 15K of event 'cpu-clock:u', Event count (approx.): 3958500000
Overhead Command Shared Object Symbol
18.26% plasmashell libpthread-2.24.so [.]
__lll_lock_elision
8.97% QXcbEventReader libc-2.24.so [.] malloc
7.15% plasmashell libQt5Core.so.5.7.0 [.] qstrcmp
5.85% plasmashell libc-2.24.so [.] _int_free
5.62% QXcbEventReader libpthread-2.24.so [.]
__lll_lock_elision
5.23% QXcbEventReader libc-2.24.so [.] _int_malloc
4.88% plasmashell libpthread-2.24.so [.]
__lll_unlock_elision
3.03% plasmashell libQt5Core.so.5.7.0 [.] QMutex::lock
2.67% plasmashell libQt5XcbQpa.so.5.7.0 [.]
QXcbConnection::processXcbEvents
2.67% plasmashell libQt5Core.so.5.7.0 [.]
QAbstractEventDispatcher::filterNativeEvent
2.34% QXcbEventReader libc-2.24.so [.]
__memmove_avx_unaligned_erms
2.23% QXcbEventReader libpthread-2.24.so [.]
pthread_cond_signal@@GLIBC_2.3.2
1.62% plasmashell libQt5Core.so.5.7.0 [.] QMutex::unlock
1.54% plasmashell libpthread-2.24.so [.]
pthread_mutex_lock
1.31% QXcbEventReader libpthread-2.24.so [.]
__lll_unlock_elision
1.09% plasmashell libQt5Core.so.5.7.0 [.]
QCoreApplicationPrivate::sendThroughApplicationEventFilters
0.88% plasmashell libQt5XcbQpa.so.5.7.0 [.]
QXcbConnection::handleXcbEvent
0.73% QXcbEventReader libQt5Core.so.5.7.0 [.] QMutex::lock
0.63% QXcbEventReader libc-2.24.so [.] _int_free
0.54% plasmashell libc-2.24.so [.]
pthread_mutex_lock
0.49% plasmashell libQt5Core.so.5.7.0 [.] QObject::event
0.48% plasmashell libX11.so.6.3.0 [.]
XESetWireToEvent
0.45% QXcbEventReader libQt5Core.so.5.7.0 [.]
QMetaObject::activate
0.45% plasmashell ld-2.24.so [.]
_dl_update_slotinfo
0.44% QXcbEventReader libQt5Core.so.5.7.0 [.] QMutex::unlock
0.44% plasmashell libc-2.24.so [.] free
0.41% QXcbEventReader libpthread-2.24.so [.]
pthread_mutex_lock
[...]
Using modesetting driver. From /var/log/Xorg.0.log:
[...]
[115563.964] (EE) Failed to load module "intel" (module does not exist, 0)
[115563.964] (II) LoadModule: "modesetting"
[115563.964] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[115563.965] (II) Module modesetting: vendor="X.Org Foundation"
[115563.965] compiled for 1.18.4, module version = 1.18.4
[115563.965] Module class: X.Org Video Driver
[115563.965] ABI class: X.Org Video Driver, version 20.0
[...]
Note sure what other information I can provide.
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